Estimate compression level
A Chrome browser extension that estimates the HTTP compression level of the page.
¿Qué es Estimate compression level?
Estimate compression level es una extensión de Chrome desarrollada por Leon Brocard, y su función principal es "A Chrome browser extension that estimates the HTTP compression level of the page.".
Capturas de Pantalla de la Extensión
Descargar Archivo CRX de la Extensión Estimate compression level
Descarga archivos de extensión Estimate compression level en formato crx, instala manualmente las extensiones de Chrome en el navegador o comparte los archivos crx con amigos para instalar fácilmente las extensiones de Chrome.
Instrucciones de Uso de la Extensión
Background
Compression is a core feature of HTTP that improves transfer speed, cache bandwidth utilization and cache utilization.
Lossless data compression algorithms development led to the LZW algorithm (1984), used by the compress application (1985), and then the PKZIP application (1991) with its DEFLATE algorithm which was then used in the gzip format (1992). The zlib library (1995) became a de facto standard compression library for gzip data.
HTTP/1.1 in 1999 (RFC 2616) added support for gzip, compress and deflate compression as content encodings. gzip compression quickly became the default as it compressed better than compress, which used the patented LZW algorithm, and as Microsoft incorrectly implemented deflate as a broken raw deflate stream instead of the correct deflate stream inside a zlib format wrapper.
Compression algorithms generally define a file format and how to decompress it. This allows the user to pick an appropriate compression level: either fast compression, which compresses quickly, but doesn't compress very small or instead best compression, which compresses slowly but generates a smaller output.
With gzip and zlib these levels range from 1 (fast) to 9 (best), with a default of 6.
When you browse to a page with this extension and the content is compressed with gzip, a little badge is shown with the estimated compression level.
If the compression was achieved with a gzip compressor other than zlib, a fractional estimate of zlib compression level is shown.
How does it work?
The chrome extension notes the Content-Length of the page as it is loaded, then fetches the page again, tries to compress it with a variety of levels and then displays the result.
This uses more network and CPU. Use sparingly.
TODO
Some websites use the newer Brotli compression algorithm instead of gzip. This extension does not support Brotli yet. Información Básica de la Extensión
| Nombre |  Estimate compression level |
| ID | lgogndmdpoegjafbbedeedmeofohbopo |
| URL Oficial | https://chromewebstore.google.com/detail/estimate-compression-leve/lgogndmdpoegjafbbedeedmeofohbopo |
| Descripción | A Chrome browser extension that estimates the HTTP compression level of the page. |
| Tamaño del Archivo | 520 KB |
| Cantidad de Instalaciones | 98 |
| Versión Actual | 0.0.1 |
| Última Actualización | 2022-03-17 |
| Fecha de Publicación | 2022-03-17 |
| Calificación | 1.00/5 Total de 1 Calificaciones |
| Desarrollador | Leon Brocard |
| Correo electrónico | [email protected] |
| Tipo de Pago | free |
| Sitio Web de la Extensión | https://github.com/fastly/chrome-extension-estimate-compression-level |
| URL de la Página de Ayuda | https://github.com/fastly/chrome-extension-estimate-compression-level |
| Idiomas Soportados | en |
| manifest.json | |
{
"update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
"manifest_version": 3,
"name": "Estimate compression level",
"version": "0.0.1",
"action": {
"default_icon": {
"128": "images\/128.png"
}
},
"description": "A Chrome browser extension that estimates the HTTP compression level of the page.",
"icons": {
"128": "images\/128.png"
},
"background": {
"service_worker": "background.js",
"type": "module"
},
"host_permissions": [
"http:\/\/*\/*",
"https:\/\/*\/*"
],
"permissions": [
"webRequest",
"webNavigation"
]
} | |
